“ ’Til Death” (KASA-2 7 p.m.) FOX burns off four new episodes of this crummy sitcom on Christmas Day. Thanks for the lump of coal, Santa.

Holmes for Christmas (TCM 6 p.m.) Turner Classic latches onto the coattails of this Christmas’ big-budget Sherlock Holmes movie starring Robert Downey Jr. by digging a bunch of classic Holmes mysteries out of the vault: 1939’s TheHound of the Baskervilles, 1939’s The Adventures of Sherlock Holmes, 1970’s The Private Life of Sherlock Holmes and 1931’s Sherlock Holmes’ Fatal Hour.

Saturday 26

“Doctor Who: The End of Time” (BBC America 7 p.m.) First, the bad news: This two-part special is David Tennant’s final turn as Doctor Who. Now, the good news: It’s a two-part David Tennant “Doctor Who” featuring special guests from throughout his run ... including the return of a certain villainous Time Lord. Set the TiVos. You’re gonna wanna watch this again.

Sunday 27

The Sound of Music (KOAT-7 6 p.m.) AKA: The movie to show when no one’s watching.

“Everest: Beyond the Limit” (Discovery 6 p.m.) Discovery returns with the third season of this ill-advised docureality show in which assorted questionable mountain climbers (asthmatics, senior citizens, double amputees) try to break some sort of record by scaling Mount Everest. As always, there’s a good chance one of the people on screen will die.

“The Imploders” (TLC 8 p.m.) TLC’s new docureality series follows a married couple whose job it is to blow things up with high explosives. Thank god Jon and Kate didn’t have that career.

“The Real World” (MTV 11 p.m.) MTV’s venerable reality show enters its 23rd season, making it older than most of the housemates hanging out, hot-tubbing, getting drunk, macking on one another and fighting this season in Washington, D.C.